A display device includes a back board, a substrate, a display layer, and a cover lens. The back board includes a first portion, a second portion, and a bendable portion. The bendable portion is between the first portion and the second portion and separating the first portion from the second portion, and a rigidity of the bendable portion is smaller than a rigidity of the first portion and the second portion. The substrate is disposed on the first portion, the second portion, and the bendable portion, and the substrate is attached to the back board by an adhesive. The display layer is disposed on the substrate. The cover lens is disposed on the display layer.